Tkachenko Ivan

From Sarov, Russia

EMA: 15990417

Player page

Internal rating (RR)

Rating date June 12, 2023 (latest changes June 12, 2023).

38 place (457.48).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.86 + 3.50 * 0.71) = 13.921305

p1 = (672.73 * 3.30 * 0.43 + 595.74 * 3.10 * 0.57 + 828.83 * 4.05 * 0.86 + 0 + 0) / (3.30 * 0.43 + 3.10 * 0.57 + 4.05 * 0.86 + 1 + 1) = 564.1508725622981

p2 = (828.83 * 4.05 * 0.86 + 595.74 * 3.10 * 0.57 + 672.73 * 3.30 * 0.43) / max_coefficients = 350.8176855546229

score = 564.1508725622981 * 0.5 + 350.8176855546229 * 0.5 = 457.4842790584605

Rating changes

Show

all results
Date Place Points Reason
2023-06-12 34 -> 38 475.32 -> 457.48

Moscow Riichi 2022: 100% -> 86%
2023-06-11 30 -> 34 504.54 -> 475.32
2023-05-28 30 501.18 -> 504.54
2023-05-20 30 493.21 -> 501.18
2023-05-06 29 -> 30 507.43 -> 493.21

Kirov Tournament: 57% -> 43%
2023-04-19 28 -> 29 513.58 -> 507.43

Agari team tournament: 71% -> 57%
2023-03-28 29 -> 28 509.56 -> 513.58
2023-03-20 31 -> 29 501.93 -> 509.56
2023-03-06 29 -> 31 515.02 -> 501.93

Kirov Tournament: 71% -> 57%
2023-02-19 26 -> 29 521.35 -> 515.02

Agari team tournament: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 829 2022-06-12 20/112 86% 4.05 RR Moscow Riichi 2022
2 596 2021-12-19 20/48 57% 3.10 RR Agari team tournament
3 673 2021-11-06 19/56 43% 3.30 RR Kirov Tournament
4 600 2019-07-21 15/36 0% 3.20 RR Moscow Open Riichi Marathon 2019
5 373 2019-05-04 53/84 0% 4.20 EMA Haru Shanten 2019
6 298 2019-01-13 34/48 0% 3.10 RR Agari team tournament 2019